When outdoor catering is closed, it is necessary to properly protect and store seasonings to ensure food safety and hygiene. Covering is a common practice, which can avoid the influence of external factors such as sunshine, rain and dust. In addition, covering can also prevent insects, ants and other small animals from entering the seasoning to ensure the freshness and hygiene of the ingredients. Therefore, it is suggested that outdoor catering should be covered with seasonings when it is closed to ensure food quality and safety.